From owner-freebsd-current@FreeBSD.ORG Sun Jul 3 01:04:11 2005 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B0CD316B979; Sun, 3 Jul 2005 01:03:27 +0000 (GMT) (envelope-from ps@mu.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id AFE5F44D97; Sun, 3 Jul 2005 00:56:31 +0000 (GMT) (envelope-from ps@mu.org) Received: by elvis.mu.org (Postfix, from userid 1000) id 16AFB61C57; Sat, 2 Jul 2005 17:18:37 -0700 (PDT) X-Original-To: ps@mu.org Delivered-To: ps@mu.org Received: from mx2.freebsd.org (mx2.freebsd.org [216.136.204.119]) by elvis.mu.org (Postfix) with ESMTP id 39E4D5CA00 for ; Fri, 4 Feb 2005 09:23:11 -0800 (PST) Received: from hub.freebsd.org (hub.freebsd.org [216.136.204.18]) by mx2.freebsd.org (Postfix) with ESMTP id 190EE561B0 for ; Fri, 4 Feb 2005 17:23:01 +0000 (GMT) (envelope-from mohan_srinivasan@yahoo.com) Received: by hub.freebsd.org (Postfix) id CE10D16A4D2; Fri, 4 Feb 2005 17:23:00 +0000 (GMT) Delivered-To: ps@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CBBFC16A4D0 for ; Fri, 4 Feb 2005 17:23:00 +0000 (GMT) Received: from web80605.mail.yahoo.com (web80605.mail.yahoo.com [66.218.79.94]) by mx1.FreeBSD.org (Postfix) with SMTP id 859D843D55 for ; Fri, 4 Feb 2005 17:23:00 +0000 (GMT) (envelope-from mohan_srinivasan@yahoo.com) Message-ID: <20050204172300.66172.qmail@web80605.mail.yahoo.com> Received: from [64.172.45.63] by web80605.mail.yahoo.com via HTTP; Fri, 04 Feb 2005 09:23:00 PST From: Mohan Srinivasan To: Kris Kennaway In-Reply-To: <20050204071502.GA17866@xor.obsecurity.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Spam-Checker-Version: SpamAssassin 3.0.1 (2004-10-22) on elvis.mu.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00 autolearn=ham version=3.0.1 X-Spam-Level: Cc: ps@FreeBSD.org, current@FreeBSD.org Subject: Re: Processes stuck in nfsreq X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Sun, 03 Jul 2005 01:04:15 -0000 X-Original-Date: Fri, 4 Feb 2005 09:23:00 -0800 (PST) X-List-Received-Date: Sun, 03 Jul 2005 01:04:15 -0000 Since we don't have a core, is it possible for me to get access to your kgdb client and the target host ? I was unable to reproduce this on my setup last time I tried (when you reported the issue first). (I've been sick this week, but I can look at this first thing Monday). mohan --- Kris Kennaway wrote: > On Thu, Feb 03, 2005 at 10:29:16AM -0800, Mohan Srinivasan wrote: > > Hi, > > > > In the info you have below, the NFS request was not sent (R_SENT > > is not set). We didn't send out the request because possibly nm_cwnd > > didn't allow us to send the request. If nfs_request() could not send > > the request, then typically, the request would be retransmitted from > > nfs_timer(). > > > > If nm_cwnd is full, then there must be a lot of outstanding requests > > that haven't been replied to yet (on this mount), which is the fundamental > > issue. > > > > Can you force a core dump and send me a pointer to it ? > > > > Also, after you force a core, can you also try a quick workaround - someone > > else also reported NFS client hangs and said that things were fine > > after they set mpsafenet to 0. It would be good to see if there's a > > correlation there. > > FYI, it looks like turning off mpsafenet indeed masks the bug. > > Kris > > ATTACHMENT part 2 application/pgp-signature